UNIX for Dummies Questions & Answers

Hi,
OS - Unix

Iam doing the following:
after login to the unix box
1. change directory
2. run a shell script "preinstall.sh"
3. This takes apprx 5 mins
4. after which i use to change permission of a file "installhub.sh" (this file is generated from the previous step).

Is there anyway i can right a shell script to check when the "preinstall.sh" finishes or successfully finishes and then i go to the next step of changing permission for the file "installhub.sh"?

How to check if process is complete (successful or not)? (Here in this case for "preinstall.sh")

Another question - is "Sleep 5" command used in the scripts mean the process is suspended for 5 minutes or the process is running for say 4 minutes and i had given 5 minutes after which the next step will continue?

Any direction, so that i can pick up from there?

thanks

preinstall.sh

if [[ $? -ne 0 ]]; then
echo "Program failed"
exit 2
fi

This will check whether the program has successfully end or not...

Easiest way: change preinstall.sh to automatically change the permissions of installhub.sh
More complex way:

Code:

$ cat test1.sh
#!/usr/bin/ksh
sleep 10       # Sleep 10 seconds
echo "$0 done"
$
$ cat test2.sh
#!/usr/bin/ksh
echo "$0 done"
$
$ ./test1.sh &
[1] 10774
$ PID=$! ; while [ "$( ps -p $PID 2>&1 >/dev/null ; echo $? )" = "0" ]; do sleep 5; done ; ./test2.sh
./test1.sh done
[1]+  Done                    ./test1.sh
./test2.sh done
$

As for your other question: sleep halts the script for the given amount of seconds